Electronic structure of the electron-doped cuprate superconductors

TL;DR

This paper investigates the electronic structure of electron-doped cuprate superconductors using a kinetic energy driven d-wave superconductivity framework, revealing similarities with hole-doped counterparts despite phase diagram asymmetries.

Contribution

It provides a theoretical analysis of the electronic structure in electron-doped cuprates, highlighting spectral weight changes and quasiparticle behavior with doping.

Findings

Spectral weight at (π,0) increases with doping.

Superconducting quasiparticle peaks shift towards Fermi energy.

Weak dispersion of quasiparticles around (π,0).

Abstract

Within the framework of the kinetic energy driven d-wave superconductivity, the electronic structure of the electron doped cuprate superconductors is studied. It is shown that although there is an electron-hole asymmetry in the phase diagram, the electronic structure of the electron-doped cuprates in the superconducting-state is similar to that in the hole-doped case. With increasing the electron doping, the spectral weight in the $(\pi,0)$ point increases, while the position of the superconducting quasiparticle peak is shifted towards the Fermi energy. In analogy to the hole-doped case, the superconducting quasiparticles around the $(\pi,0)$ point disperse very weakly with momentum.